定义一个时期

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How many working days in year 2023?

Here is the detail of the calculation:

Because 2023 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 249 working days in 2023.

Here is the list of these 11 public holidays:

1. New Year's Day (observance) : 星期一, 2023, 01, 2
2. Martin Luther King Day : 星期一, 2023, 01, 16
3. Washington's Birthday : 星期一, 2023, 02, 20
4. Memorial Day : 星期一, 2023, 05, 29
5. Juneteenth National Independence Day : 星期一, 2023, 06, 19
6. Independence Day : 星期二, 2023, 07, 4
7. Labor Day : 星期一, 2023, 09, 4
8. Columbus Day : 星期一, 2023, 10, 9
9. Veterans Day (observance) : 星期五, 2023, 11, 10
10. Thanksgiving : 星期四, 2023, 11, 23
11. Christmas : 星期一, 2023, 12, 25

And here are the 2 public holidays falling on a weekend:

1. New Year's Day : 星期日, 2023, 01, 1
2. Veterans Day : 星期六, 2023, 11, 11